<script setup>
 import { ref,onMounted,computed,watch  } from "vue"
/* --------------------Vuex-------------------- */
 //import store from "@/store/store.js"
 import { useStore,mapGetters } from "vuex"
 let store = useStore()
 let total = computed(()=>{   //store里的计算属性
    return store.getters.total
 })
 /* --------------------Vuex-------------------- */
 
 let timer  //设置加入购物车防抖
 let goods_info = ref({})
 // 左侧按钮组的配置对象
 let options = ref([{
       icon: 'shop',
       text: '店铺'
     }, {
       icon: 'cart',
       text: '购物车',
       info: total
     }])
   // 右侧按钮组的配置对象
 let  buttonGroup = [{
      text: '加入购物车',
       backgroundColor: '#ff0000',
       color: '#fff'
     },
     {
       text: '立即购买',
       backgroundColor: '#ffa200',
       color: '#fff'
     }
  ]
 //获取商品详细信息
 async function getGoodsDetail(goods_id){
   const { data: res } = await uni.$http.get('/api/public/v1/goods/detail', { goods_id })
   if (res.meta.status !== 200) return uni.$showMsg()
   
   res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g, '<img style="display:block;" ').replace(/webp/g, 'jpg')
   goods_info.value = res.message
 }
// 实现轮播图的预览效果
function preview(i) {
  // 调用 uni.previewImage() 方法预览图片
  uni.previewImage({
    current: i,
    // 所有图片 url 地址的数组
    urls: goods_info.value.pics.map(x => x.pics_big)
  })
}
 // 左侧按钮的点击事件处理函数
 function onClick({content:{text:text}}) {
    if (text === '购物车') {
      // 切换到购物车页面
      uni.switchTab({
        url: '/pages/cart/cart'
      })
      return
    }
    console.log('店铺操作');
 }
 
 
 

 /* ----------Vuex-store状态操作--------------- */
 function buttonClick({content:{text:text}}){

  clearTimeout(timer)
  
  timer = setTimeout(()=>{
    if(text === '加入购物车'){
       //组织一个商品的信息对象
        const goods = {
           goods_id: goods_info.value.goods_id,        // 商品的Id
           goods_name: goods_info.value.goods_name,    // 商品的名称
           goods_price: goods_info.value.goods_price,  // 商品的价格
           goods_count: 1,                             // 商品的数量
           goods_small_logo: goods_info.value.goods_small_logo, // 商品的图片
           goods_state: true                           // 商品的勾选状态
        }      
        store.commit('addToCart',goods)
        return
    }
  },300)
   
    
 }


 // watch(total,(newTotal,oldTotal)=>{
 //   console.log('total发生了变化~',newTotal)
 // })
 
 /* ----------Vuex-store状态操作--------------- */
 
 

 onMounted(()=>{
   let curPage = (getCurrentPages().length)-1;
   const goods_id = getCurrentPages()[curPage]['options']['goods_id'];
   getGoodsDetail(goods_id)
 })
 
</script>



<template>
  <view v-if="goods_info.goods_name" class="goods-detail-container">
      <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
         <swiper-item v-for="(item,i) in goods_info.pics" :key="i">
           <image :src="item.pics_big" @click="preview(i)"></image>
         </swiper-item>
      </swiper>
      
      <!-- 商品信息区域 -->
      <view class="goods-info-box">
        <!-- 商品价格 -->
        <view class="price">￥{{goods_info.goods_price}}</view>
        <!-- 信息主体区域 -->
        <view class="goods-info-body">
          <!-- 商品名称 -->
          <view class="goods-name">{{goods_info.goods_name}}</view>
          <!-- 收藏 -->
          <view class="favi">
            <uni-icons type="star" size="18" color="gray"></uni-icons>
            <text>收藏</text>
          </view>
        </view>
        <!-- 运费 -->
        <view class="yf">快递：免运费}<!-- {{username}} {{age}} --> </view>
        <rich-text :nodes="goods_info.goods_introduce"></rich-text>
      </view>
      
      
      <!-- 商品导航组件 -->
      <view class="goods_nav">
        <!-- fill 控制右侧按钮的样式 -->
        <!-- options 左侧按钮的配置项 -->
        <!-- buttonGroup 右侧按钮的配置项 -->
        <!-- click 左侧按钮的点击事件处理函数 -->
        <!-- buttonClick 右侧按钮的点击事件处理函数 -->
        <uni-goods-nav :options="options" 
        :buttonGroup="buttonGroup" @click="onClick" @buttonClick="buttonClick" />
      </view>
      
      
  </view>
</template>

<style lang="scss">
swiper {
  height: 750rpx;

  image {
    width: 100%;
    height: 100%;
  }
}

// 商品信息区域的样式
.goods-info-box {
  padding: 10px;
  padding-right: 0;

  .price {
    color: #c00000;
    font-size: 18px;
    margin: 10px 0;
  }

  .goods-info-body {
    display: flex;
    justify-content: space-between;

    .goods-name {
      font-size: 13px;
      padding-right: 10px;
    }
    // 收藏区域
    .favi {
      width: 120px;
      font-size: 12px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      border-left: 1px solid #efefef;
      color: gray;
    }
  }

  // 运费
  .yf {
    margin: 10px 0;
    font-size: 12px;
    color: gray;
  }
}


.goods-detail-container {
  // 给页面外层的容器，添加 50px 的内padding，
  // 防止页面内容被底部的商品导航组件遮盖
  padding-bottom: 50px;
}
.goods_nav{
   position: fixed;
   bottom: 0;
   left:0;
   width: 100%
}


</style>
